So to be clear about this, theres actually 4 different style ET bikes flying about 
The 'Elliot film ET' which is a Kz, non looptail, with chunky tyres, red horseshoe stem, rattrap pedals.
Then 3 bikes sold to the public:
'ET Original' which had a tange made T2 frame with high end components, sugino spider, stem, diacompe brakes kkt pedals, Ukai's with large flange hubs.
'ET Replica' same Tange T2 frame as the original but lower end components, horseshoe stem, rattrap pedals, chrome steel Ukai's
'ET Special' known as the toystore model, Apollo frame, crappy components & was just basically a copy of the real thing.
Does everyone agree with that?! 
I'd say that pretty much covers it , don't want it anymore complixated

The only thing what is vague is the Movie bikes ,,as they used a few ( slightly varying )